In AABC, 2C-32B, 2C-2(ZA+ZB), then the measure of B is:(A)40°(B) 60°

1.	In AABC, 2C-32B, 2C-2(ZA+ZB), then the measure of B is:(A)40°(B) 60°(C) 90°= ² ( 2 (k+ 7) +-) 11 2 k = 14 +30(D) 120°luk+
Answer» option d120° is correct answer let <B=x<C= 3x<C=2(<A+<B)3x=2<A+2x3x-2x=<Ax=<A<A+<B+<C=180x+x+3x=1805x= 180x= 180/5 = 36°<B= 36°=<A<c=3×36= 108°< option d is the correct answer

In AABC, 2C-32B, 2C-2(ZA+ZB), then the measure of B is:(A)40°(B) 60°(C) 90°= ² ( 2 (k+ 7) +-) 11 2 k = 14 +30(D) 120°luk+

Answer»

option d120° is correct answer

let <B=x<C= 3x<C=2(<A+<B)3x=2<A+2x3x-2x=<Ax=<A<A+<B+<C=180x+x+3x=1805x= 180x= 180/5 = 36°<B= 36°=<A<c=3×36= 108°<

option d is the correct answer